\documentclass[11pt]{article} %A4纸

\usepackage{amssymb,latexsym,amsmath,amsfonts} \usepackage{ctex, tasks}

\newcommand{\LeaveBlank}{0} %输出A4文档
%\newcommand{\LeaveBlank}{1} %输出A4文档，而且预留做题空白
\newcommand{\mynewpage}{\ifnum\LeaveBlank=1 \newpage \fi }

\addtolength{\textheight}{4.5cm}\addtolength{\voffset}{-2.4cm}\addtolength{\textwidth}{3.7cm}\addtolength{\hoffset}{-2.2cm}   
\usepackage{titling}\setlength{\droptitle}{-2cm} 

\title{高等代数二作业5} \author{王立庆（2024级数学与应用数学1班）} \date{2025年3月31日 - 4月6日} %\date{\today}

\input{LAProblemSetE} % 载入题库文件 

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\begin{document}
\maketitle 

\begin{abstract}
1. \EABSA （\EABSAa \EABSAb \EABSAc \EABSAd）

2. \EABSB （\EABSBa \EABSBb）
\end{abstract}

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\section{讲解}
\begin{enumerate}\ifnum\LeaveBlank=1 \itemsep6cm \fi 
\item  \ETA  \ifnum\LeaveBlank=1 \vspace{-1cm} \fi 
\item  \ETB  \mynewpage
\item  \ETC    
\item  \ETD   \mynewpage
\item  \ETE   
\item  \ETF   \mynewpage
\item  \ETG   
\item  \ETH    
\end{enumerate}

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\newpage

\section{习题}
\begin{enumerate}\ifnum\LeaveBlank=1 \itemsep6cm \fi 
\item  \EEA 
\item  \EEB \mynewpage
\item  \EEC  
\item  \EED 
\end{enumerate}

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\end{document}

